Illegal guns are a problem in all of these countries, but...

...In the U.S., buying carbine rifles used in war and tactical assault situations are common. Here, a Smith & Wesson M-15 MOE is displayed at the National Shooting Sports Foundation's 34th annual Shooting, Hunting, Outdoor Trade Show at the Sands Expo in Las Vegas. In light of sensational, random acts of gun violence this year in the U.S., many are calling for stricter rules regarding this type of weaponry. Meanwhile, the most dangerous place outside of a war zone is...